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LeCto:

Freeware VST Amp Sim LeCto.

Realistic Amp Sim VST

LeCto is a free guitar amp simulator by LePou. The VST is inspired by an American modern high gain head. It can go from crunch to high gain. The LeCto amp sim features: oversampling, mono/stereo, drive, frequency controls, presence and resonance control. LeCto is only an amp simulator, so you need to use a cabinet simulator as well. Be sure to check out LePou's LeCab2 as well. It's a cabinet (guitar or bass) impulse loader that can hold up to 6 different IR files at the same time.